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Posted to issues@hbase.apache.org by "xuming (JIRA)" <ji...@apache.org> on 2018/11/21 12:55:00 UTC

[jira] [Created] (HBASE-21504) Using FIFOCompactionPolicy, a compact my write a empty HFile. And the HFile will never be expired

xuming created HBASE-21504:
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             Summary: Using FIFOCompactionPolicy, a compact my write a empty HFile. And the HFile will never be  expired 
                 Key: HBASE-21504
                 URL: https://issues.apache.org/jira/browse/HBASE-21504
             Project: HBase
          Issue Type: Bug
          Components: Compaction
    Affects Versions: 2.1.0
            Reporter: xuming
         Attachments: 1.patch

When i use FIFOCompactionPolicy, and if all hfiles(>1) are TTL expired in a region, once we do a compaction on the region, the compaction policy will select the latest hfile to do compaction.But beacuse the hfile is already TTL expired, compactor will write a new hfile(whose entry counter is 0 and maxTimeStamp is Long.MAX_VALUE). The new hfile will never be TTL expired, so we can never remove it by FIFOCompactionPolicy.



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